Ernesto,
1) I generally preview the graphics on the x11() display, and then print
to a file using the 'postscript' output device. Using the following
procedure has never failed for me.
>plot(x,y,...)
>legend(...)
>postscript("Rplots.ps",paper="a4",width=6,height=5,
+ family="Times")>plot(x,y,...)
>legend(...)
>dev.off
>system("lpr Rplots.ps")
(In fact, I usually encapsulate the whole affair in a specially written
plotting routine which allows me to choose whether or not to produce
hard copy with a keystroke.) You can, of course, call the output file
anything you please. Trying to use '/dev/lp1' (or whatever your
Postscript device file is) is usually not a good idea. When I have
messed up a legend on hard copy, it has usually been because of improper
x/y placement.
2) The problem brought up by F. Moro (9/5/98) may be relevant to your
second request. If you just want an axis label, the following will
produce one.
> par(mar=c(5,5,5,5))
> plot(...)
> axis(...)
> mtext("y2",side=4,line=3)
Jim
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